My X dual sim has just arrived and I see in the January update SFOS 2.2 will be out in 'a couple of months' adding official support - any thoughts on whether I should wait or will it be a smooth upgrade if I mod the current version?

I'm thinking the new kernel won't arrive until SFOS3 so it should be OK but this is .2 rather than the usual .1.x so must be more significant...